package LWP::UserAgent;

use strict;
use vars qw(@ISA $VERSION);

require LWP::MemberMixin;
@ISA = qw(LWP::MemberMixin);
$VERSION = "5.817";

use HTTP::Request ();
use HTTP::Response ();
use HTTP::Date ();

use LWP ();
use LWP::Debug ();
use LWP::Protocol ();

use Carp ();

if ($ENV{PERL_LWP_USE_HTTP_10}) {
    require LWP::Protocol::http10;
    LWP::Protocol::implementor('http', 'LWP::Protocol::http10');
    eval {
        require LWP::Protocol::https10;
        LWP::Protocol::implementor('https', 'LWP::Protocol::https10');
    };
}



sub new
{
    # Check for common user mistake
    Carp::croak("Options to LWP::UserAgent should be key/value pairs, not hash reference") 
        if ref($_[1]) eq 'HASH'; 

    my($class, %cnf) = @_;
    LWP::Debug::trace('()');

    my $agent = delete $cnf{agent};
    my $from  = delete $cnf{from};
    my $timeout = delete $cnf{timeout};
    $timeout = 3*60 unless defined $timeout;
    my $use_eval = delete $cnf{use_eval};
    $use_eval = 1 unless defined $use_eval;
    my $parse_head = delete $cnf{parse_head};
    $parse_head = 1 unless defined $parse_head;
    my $show_progress = delete $cnf{show_progress};
    my $max_size = delete $cnf{max_size};
    my $max_redirect = delete $cnf{max_redirect};
    $max_redirect = 7 unless defined $max_redirect;
    my $env_proxy = delete $cnf{env_proxy};

    my $cookie_jar = delete $cnf{cookie_jar};
    my $conn_cache = delete $cnf{conn_cache};
    my $keep_alive = delete $cnf{keep_alive};
    
    Carp::croak("Can't mix conn_cache and keep_alive")
	  if $conn_cache && $keep_alive;


    my $protocols_allowed   = delete $cnf{protocols_allowed};
    my $protocols_forbidden = delete $cnf{protocols_forbidden};
    
    my $requests_redirectable = delete $cnf{requests_redirectable};
    $requests_redirectable = ['GET', 'HEAD']
      unless defined $requests_redirectable;

    # Actually ""s are just as good as 0's, but for concision we'll just say:
    Carp::croak("protocols_allowed has to be an arrayref or 0, not \"$protocols_allowed\"!")
      if $protocols_allowed and ref($protocols_allowed) ne 'ARRAY';
    Carp::croak("protocols_forbidden has to be an arrayref or 0, not \"$protocols_forbidden\"!")
      if $protocols_forbidden and ref($protocols_forbidden) ne 'ARRAY';
    Carp::croak("requests_redirectable has to be an arrayref or 0, not \"$requests_redirectable\"!")
      if $requests_redirectable and ref($requests_redirectable) ne 'ARRAY';


    if (%cnf && $^W) {
	Carp::carp("Unrecognized LWP::UserAgent options: @{[sort keys %cnf]}");
    }

    my $self = bless {
		      def_headers  => undef,
		      timeout      => $timeout,
		      use_eval     => $use_eval,
                      show_progress=> $show_progress,
		      max_size     => $max_size,
		      max_redirect => $max_redirect,
                      proxy        => {},
		      no_proxy     => [],
                      protocols_allowed     => $protocols_allowed,
                      protocols_forbidden   => $protocols_forbidden,
                      requests_redirectable => $requests_redirectable,
		     }, $class;

    $self->agent($agent || $class->_agent);
    $self->from($from) if $from;
    $self->cookie_jar($cookie_jar) if $cookie_jar;
    $self->parse_head($parse_head);
    $self->env_proxy if $env_proxy;